我想用Qt开发一个媒体播放器。在文档的基础上,我做了以下事情:
专业档案
QT += core gui multimedia
QT += multimediawidgets
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = Player
TEMPLATE = app
SOURCES += main.cpp\
mainwindow.cpp
HEADERS += mainwindow.h
FORMS += mainwindow.ui
main.cpp文件
#include <QApplication>
#include <QtMultimediaWidgets/QVideoWidget>
#include <QtMultimedia/QMediaPlayer>
#include <QtMultimedia/QMediaPlaylist>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QMediaPlayer *player=new QMediaPlayer;
QVideoWidget *videowidget=new QVideoWidget;
QMediaPlaylist *playlist=new QMediaPlaylist;
playlist->addMedia(QUrl("C:/Users/Administrator/Desktop/VideoLAN/VLC/stram.mp4"));
player->setVideoOutput(videowidget);
playlist->setCurrentIndex(1);
player->setPlaylist(playlist);
player->play();
videowidget->show();
return a.exec();
}
至于头文件,我已经包含 mainwindow.h
修改
所有的恐怖分子都消失了,但现在输出的是:
我哪里错了?
答案 0 :(得分:2)